[maat333]

I would leave it to someone with more experience, because even if you drilled holes in the right place, it is dangerous to just run wires through sharp holes.
The insulation will eventually get cut through, and then you could fry your electrical system or even start a fire.
Even worse, you could drill into the gastank or something.
You need more experience that you seem to have.
Not only could you have modifications come loose and be broken, but you could get yourself and the car burned up in a gasoline fire.